Terrelle Pryor started nine games for the Raiders in 2013, including the season finale against Denver (above), and threw seven touchdown passes and 11 interceptions.

Photo: Ezra Shaw, Getty Images

Terrelle Pryor started nine games for the Raiders in 2013,...

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Raiders' quarterback Terrelle Pryor, (12) is taken down for a lose in the first quarter by Denver's Nate Irving, (56) as the Oakland Raiders take on the Denver Broncos at O.co Coliseum in Oakland, Ca. , on Sunday Dec. 29, 2013.

Photo: Michael Macor, The Chronicle

Raiders' quarterback Terrelle Pryor, (12) is taken down for a lose...

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Oakland Raiders quarterback Terrelle Pryor warms up before an NFL football game against the Dallas Cowboys Thursday, Nov. 28, 2013, in Arlington, Texas. (AP Photo/Tim Sharp)

A long and fascinating roller-coaster ride of a year for Terrelle Pryor ended Monday afternoon, with the Raiders trading the quarterback to the Seattle Seahawks for a seventh-round pick in next month's draft.

Pryor, former owner Al Davis' last draft pick before he died, won the job and started nine games last season. He injured his knee, struggled, lost his job and fell out of favor with the coaching staff. Pryor then started the last game of the season, with his since-fired agent saying head coach Dennis Allen was playing him to make him look bad.

Pryor wasn't sharp in the blowout loss to the Broncos, and asked to be traded after the season when he realized he no longer was in the team's plans.

The Raiders since acquired Matt Schaub from Houston to be the starter and are going with Matt McGloin, who started six games last year as a rookie, as the No. 2 quarterback. Oakland also has Stanford alum Trent Edwards on the roster.

On Twitter, Pryor thanked Raiders owner Mark Davis and fans for their support.

Last season, Pryor completed 57.4 percent of his passes and threw seven touchdowns and 11 interceptions in his nine starts. He has one year and $705,000 left on his rookie contract.

The Raiders took Pryor with a third-round pick in the supplemental draft in 2011, less than two months before Davis died. Pryor was suspended for the first five games by NFL Commissioner Roger Goodell, who ruled he had to miss the time he would have served under a suspension had he stayed at Ohio State.

Pryor didn't play much his first two seasons but then surprisingly won the starting job at training camp in 2013, when Matt Flynn faltered. General manager Reggie McKenzie had traded for Flynn.

Pryor played well in his first four starts, completing 68 percent of his passes for 845 yards and four touchdowns. He also set an NFL record for quarterbacks with a 93-yard touchdown run against Pittsburgh on Oct. 27.

He struggled in his next four starts, completing 50.1 percent of his passes for 714 yards with one touchdown, eight interceptions. Pryor didn't seem to be on the same page as the Raiders as to the severity of a knee injury, and lost his starting job to McGloin.

Why the rush to trade him, or cut him if no deal could be made?

Pryor's lack of vision in the pocket, with his head moving back and forth, and his forgoing of designed plays frustrated the coaches. Keeping Pryor to make the occasional dazzling play to tempt and tease the fan base and owner didn't seem like a good idea to McKenzie and Allen.